A handheld multi-degree-of-freedom minimally invasive surgical instrument

Abstract

The utility model discloses a handheld multi-degree-of-freedom minimally invasive surgical instrument, which relates to the technical field of minimally invasive surgical instruments. The utility model comprises a shell, one end of which is provided with an adjustment component, and one end of which is provided with a clamping component. The adjustment component comprises a driving gear, and both ends of the driving gear are rotatably connected to the shell. A rotating groove is provided at the bottom end of the shell, and the rotating groove is used in conjunction with the driving gear to facilitate driving the driven gear to rotate the connecting rod. The outer surface of the driving gear is meshingly connected with the driven gear, and the interior of the driven gear is fixedly sleeved with a connecting rod, and brackets are sleeved on both sides of the outer surface of the connecting rod. The handheld multi-degree-of-freedom minimally invasive surgical instrument provided by the utility model can adjust the angle of the surgical tool without the doctor moving his own position for adjustment, and can also quickly replace the surgical tool fixed by the connecting block.

Description

Technical Field

[0001] The utility model relates to the technical field of minimally invasive surgical instruments, in particular to a handheld multi-degree-of-freedom minimally invasive surgical instrument. Background Art

[0002] In 1987, French doctor MOURET accidentally completed the first LC and did not expect that it marked the birth of a new medical milestone. Minimally invasive surgery has the advantages of less trauma, less pain, and faster recovery. With the development and progress of science and technology, the concept of "minimally invasive" has penetrated into various fields of surgery. The monitoring system is not limited to endoscopes, but more interventional methods are used, such as spinal surgery and orthopedics. There are other methods, such as microsurgery, which is widely used in hand surgery, etc. At this time, a handheld multi-degree-of-freedom minimally invasive surgical instrument is needed.

[0003] However, the prior art still has the following problems:

[0004] First, most of the existing minimally invasive surgical instruments are unable to adjust the angle of the surgical tools fixed at the front end of the surgical instrument. When performing minimally invasive surgery on a patient, the doctor needs to constantly adjust his or her position before performing the surgery, which reduces the working efficiency of the surgical instrument.

[0005] Secondly, most of the existing minimally invasive surgical instruments are not equipped with a clamping structure and are usually made for different minimally invasive surgeries. The surgical tools fixed on the front end of the surgical instrument cannot be quickly replaced according to different minimally invasive surgical scenarios, which reduces the versatility of the surgical instrument.

[0006] In view of the above problems, the inventor proposes a handheld multi-degree-of-freedom minimally invasive surgical instrument to solve the above problems. Utility Model Content

[0007] In order to solve the problem that the surgical instrument cannot adjust the angle of the fixed surgical tools and cannot quickly replace different surgical tools; the purpose of the utility model is to provide a handheld multi-degree-of-freedom minimally invasive surgical instrument.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a handheld multi-degree-of-freedom minimally invasive surgical instrument, comprising a shell, one end of the shell is provided with an adjustment component, one end of the shell is provided with a clamping component, the adjustment component comprises a driving gear, both ends of the driving gear are rotatably connected with the shell, a rotating groove is provided at the bottom end of the shell, and the rotating groove is used in conjunction with the driving gear to facilitate driving the driven gear to rotate the connecting rod, the outer surface of the driving gear is meshedly connected with the driven gear, the interior of the driven gear is fixedly sleeved with a connecting rod, both sides of the outer surface of the connecting rod are sleeved with brackets, and the bottom ends of the two brackets are fixedly connected to the lower inner wall of the shell, The lockhole that is formed on the two ends of the support frame is formed on the upper and lower surfaces of the support frame, and the lockhole that is formed on the two ends of the support frame is formed on the upper and lower surfaces of the support frame.

[0009] Preferably, the clamping assembly includes a second knob, one end of the second knob passes through the connecting block and is fixedly connected to a two-way screw rod, and the two ends of the two-way screw rod are rotatably connected to the inner walls on both sides of the connecting block respectively, so as to support the clamping assembly, and the different thread directions engraved on the outer surface of the two-way screw rod are sleeved with splints, and one end of the opposite surfaces of the two splints are fixedly connected to a rubber pad, which has a buffering effect when clamping the surgical tools and will not damage the surgical tools, and also increases the friction when clamping the surgical tools, the same ends of the two splints are slidably connected to the connecting block, and the same ends of the two splints are fixedly connected to T-shaped blocks on both sides, and T-slots are provided on both sides of one end of the connecting block, and the T-slots are used in conjunction with the T-shaped blocks to prevent the two splints from flipping over during the movement.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model uses an adjustment component, wherein the driving gear, driven gear, connecting rod, half-worm gear and worm gear are used. When a doctor performs minimally invasive surgery on a patient and needs to adjust the angle of the surgical tool fixed at the front end of the surgical instrument, the doctor does not need to move his own position for adjustment. The doctor can push the driving gear or the first knob with his fingers to adjust the angle of the surgical tool, thereby achieving the effect of improving the working efficiency of the surgical instrument.

[0012] 2. The utility model uses a clamping assembly, in which the bidirectional screw, the second knob, and the splint are used. When it is necessary to replace different types of surgical tools during an operation, the surgical tools fixed by the connecting block can be quickly replaced according to the surgical tools required by the scene, thereby achieving the effect of improving the versatility of the surgical instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the shell structure of the utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the adjustment component of the utility model.

[0017] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0018] Figure 5 This is a schematic diagram of the structure of the clamping assembly of the utility model.

[0019] In the figure: 1. housing; 2. adjustment assembly; 3. clamping assembly; 4. rotating groove; 21. driving gear; 22. driven gear; 23. connecting rod; 24. bracket; 25. first knob; 26. worm; 27. connecting block; 28. clamping block; 29. ​​clamping groove; 201. half-side worm gear; 202. supporting plate; 31. splint; 32. rubber pad; 33. T-block; 34. T-slot; 35. bidirectional screw; 36. second knob. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1: Figure 1-4As shown, the utility model provides a handheld multi-degree-of-freedom minimally invasive surgical instrument, including a shell 1, one end of the shell 1 is provided with an adjustment component 2, one end of the shell 1 is provided with a clamping component 3, the adjustment component 2 includes a driving gear 21, both ends of the driving gear 21 are rotatably connected to the shell 1, the outer surface of the driving gear 21 is meshed and connected with a driven gear 22, the interior of the driven gear 22 is fixedly sleeved with a connecting rod 23, both sides of the outer surface of the connecting rod 23 are sleeved with brackets 24, the bottom ends of the two brackets 24 are fixedly connected to the lower inner wall of the shell 1, one end of the connecting rod 23 passes through one end of the shell 1 and is fixedly connected to two support plates 202, the same ends of the two support plates 202 are slidably connected with a connecting block 27, the top of the connecting block 27 is provided with a first knob 25, the bottom end of the first knob 25 passes through the connecting block 27 and is fixedly connected with a worm 26, the outer surface of the worm 26 is meshed and connected with a half-face worm wheel 201, one end of the half-face worm wheel 201 is fixedly connected to the connecting rod 23, when the doctor holds the surgical instrument to operate on the patient When the minimally invasive surgery needs to adjust the angle of the surgical tool fixed at the front end of the surgical instrument, according to the lateral angle to be adjusted, the driving gear 21 is pushed with a finger, and the driving gear 21 rotates to drive the driven gear 22 to rotate, and the driven gear 22 drives the connecting rod 23 to rotate on the two brackets 24, and the connecting rod 23 drives the connecting block 27 to rotate, and the connecting block 27 drives the clamped surgical tool to rotate. When it is necessary to adjust the longitudinal angle, the first knob 25 is rotated by hand, and the first knob 25 drives the worm 26 to rotate, and the worm 26 drives the connecting block 27 to move on the half-face worm gear 201. Because the same end of the two support plates 202 is provided with a card slot 29, both sides of one end of the connecting block 27 are fixedly connected with a card block 28, and the card slot 29 is used in conjunction with the card block 28, so the connecting block 27 will not flip during the movement until the surgical tool clamped by the connecting block 27 is adjusted to a suitable angle, and the doctor does not need to move his own position for adjustment, thereby achieving the effect of improving the working efficiency of the surgical instrument.

[0022] A rotation slot 4 is formed at the bottom of the housing 1 , and the rotation slot 4 cooperates with the driving gear 21 .

[0023] By adopting the above technical solution, it is convenient to drive the driven gear 22 to rotate the connecting rod 23.

[0024] A clamping slot 29 is formed at the same end of the two support plates 202 . Clamping blocks 28 are fixedly connected to both sides of one end of the connecting block 27 , and the clamping slot 29 cooperates with the clamping block 28 for use.

[0025] By adopting the above technical solution, the connection block 27 is prevented from falling off during rotation.

[0026] The upper and lower ends of the worm 26 are rotatably connected to the upper inner wall and the lower inner wall of the connecting block 27 respectively.

[0027] By adopting the above technical solution, the effect of supporting the adjustment component 2 is achieved.

[0028] Embodiment 2: Figure 5 As shown, the clamping assembly 3 includes a second knob 36, one end of which passes through the connecting block 27 and is fixedly connected to a bidirectional screw rod 35, and the outer surface of the bidirectional screw rod 35 is engraved with different thread directions. Clamp plates 31 are sleeved, and the same ends of the two clamp plates 31 are slidably connected to the connecting block 27. When the surgical instrument needs to replace different surgical tools, the second knob 36 is rotated by hand, and the rotation of the second knob 36 drives the bidirectional screw rod 35 to rotate between the inner walls on both sides of the connecting block 27, and the bidirectional screw rod 35 drives the two clamp plates 31 to move closer to or away from each other. Because the same ends of the two clamp plates 31 are fixed on both sides, It is fixedly connected with a T-shaped block 33, and T-shaped grooves 34 are provided on both sides of one end of the connecting block 27, and the T-shaped grooves 34 are used in conjunction with the T-shaped block 33, so the splint 31 will not flip over during the movement until the previously clamped surgical tool is released. When a new surgical tool is clamped, the surgical tool clamped by the connecting block 27 can be quickly replaced. Because one end of the opposite surface of the two splints 31 is fixedly connected with a rubber pad 32, the two splints 31 have a buffering effect when clamping the new surgical tool, which will not damage the surgical tool and also increase the friction when clamping the surgical tool.

[0029] By adopting the above technical solution, different surgical tools can be quickly replaced.

[0030] T-shaped blocks 33 are fixedly connected to both sides of the same end of the two clamping plates 31 . T-shaped slots 34 are provided on both sides of one end of the connecting block 27 , and the T-shaped slots 34 are used in conjunction with the T-shaped blocks 33 .

[0031] By adopting the above technical solution, the two clamping plates 31 are prevented from flipping over during the movement.

[0032] One end of the opposite surface of the two clamping plates 31 is fixedly connected with a rubber pad 32 .

[0033] By adopting the above technical solution, a buffering effect is achieved when clamping the surgical tool, the surgical tool will not be damaged, and the friction force when clamping the surgical tool is increased.

[0034] Two ends of the bidirectional screw rod 35 are rotatably connected to the inner walls of both sides of the connecting block 27 respectively.

[0035] By adopting the above technical solution, the effect of supporting the clamping assembly 3 is achieved.

[0036] Working principle: When the doctor holds the surgical instrument to perform minimally invasive surgery on the patient and needs to adjust the angle of the surgical tool fixed at the front end of the surgical instrument, according to the lateral angle that needs to be adjusted, the driving gear 21 is pushed with a finger, and the rotation of the driving gear 21 drives the driven gear 22 to rotate, and the driven gear 22 drives the connecting rod 23 to rotate on the two brackets 24, and the connecting rod 23 drives the connecting block 27 to rotate, and the connecting block 27 drives the clamped surgical tool to rotate. When it is necessary to adjust the longitudinal angle, the first knob 25 is rotated by hand, and the first knob 25 drives the worm 26 to rotate, and the worm 26 drives the connecting block 27 to move on the half-surface worm gear 201. Because the same end of the two support plates 202 is provided with a card slot 29, both sides of one end of the connecting block 27 are fixedly connected with a card block 28, and the card slot 29 is used in conjunction with the card block 28, so the connecting block 27 will not flip during the movement until the surgical tool clamped by the connecting block 27 is adjusted to a suitable angle, and the doctor does not need to move the connecting block 27. The position of the body can be adjusted to improve the working efficiency of the surgical instrument. When the surgical instrument needs to replace different surgical tools, the second knob 36 is rotated by hand. The rotation of the second knob 36 drives the bidirectional screw rod 35 to rotate between the inner walls on both sides of the connecting block 27, and the bidirectional screw rod 35 drives the two clamps 31 to move closer or farther away from each other. Because the two clamps 31 are fixedly connected with T-shaped blocks 33 on both sides of the same end, and T-shaped grooves 34 are provided on both sides of one end of the connecting block 27, and the T-shaped grooves 34 are used in conjunction with the T-shaped blocks 33, the clamps 31 will not flip over during the movement until the previously clamped surgical tools are released. When the new surgical tools are clamped, the surgical tools clamped by the connecting block 27 can be quickly replaced. Because the rubber pads 32 are fixedly connected to one end of the opposite surfaces of the two clamps 31, the two clamps 31 have a buffering effect when clamping the new surgical tools, which will not damage the surgical tools and increase the friction when clamping the surgical tools.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A handheld multi-degree-of-freedom minimally invasive surgical instrument, comprising a housing (1), characterized in that: An adjustment component (2) is provided at one end of the shell (1), and a clamping component (3) is provided at one end of the shell (1); The adjusting assembly (2) comprises a driving gear (21), both ends of which are rotatably connected to the housing (1), the outer surface of the driving gear (21) is meshingly connected to a driven gear (22), the interior of the driven gear (22) is fixedly sleeved with a connecting rod (23), both sides of the outer surface of the connecting rod (23) are sleeved with brackets (24), the bottom ends of the two brackets (24) are fixedly connected to the lower inner wall of the housing (1), and one end of the connecting rod (23) penetrates the housing. One end of the body (1) is fixedly connected to two support plates (202), and the same ends of the two support plates (202) are slidably connected to a connecting block (27), the top of the connecting block (27) is provided with a first knob (25), the bottom end of the first knob (25) passes through the connecting block (27) and is fixedly connected to a worm (26), the outer surface of the worm (26) is meshingly connected to a half-face worm wheel (201), and one end of the half-face worm wheel (201) is fixedly connected to a connecting rod (23).

2. A handheld multi-degree-of-freedom minimally invasive surgical instrument as claimed in claim 1, characterized in that: The clamping assembly (3) comprises a second knob (36), one end of which passes through the connecting block (27) and is fixedly connected to a bidirectional screw rod (35), and clamping plates (31) are sleeved at different thread directions engraved on the outer surface of the bidirectional screw rod (35), and the same ends of the two clamping plates (31) are slidably connected to the connecting block (27).

3. A handheld multi-degree-of-freedom minimally invasive surgical instrument as claimed in claim 1, characterized in that: A rotation groove (4) is provided at the bottom end of the housing (1), and the rotation groove (4) is used in conjunction with the driving gear (21).

4. A handheld multi-degree-of-freedom minimally invasive surgical instrument as claimed in claim 1, characterized in that: A card slot (29) is provided at the same end of the two support plates (202), and card blocks (28) are fixedly connected to both sides of one end of the connection block (27), and the card slot (29) is used in conjunction with the card block (28).

5. The handheld multi-degree-of-freedom minimally invasive surgical instrument according to claim 1, characterized in that: The upper and lower ends of the worm (26) are rotatably connected to the upper inner wall and the lower inner wall of the connecting block (27) respectively.

6. A handheld multi-degree-of-freedom minimally invasive surgical instrument as claimed in claim 2, characterized in that: Both sides of the same end of the two clamping plates (31) are fixedly connected with T-shaped blocks (33), and both sides of one end of the connecting block (27) are provided with T-shaped grooves (34), and the T-shaped grooves (34) are used in conjunction with the T-shaped blocks (33).

7. A handheld multi-degree-of-freedom minimally invasive surgical instrument as claimed in claim 2, characterized in that: One end of the opposite surface of the two clamping plates (31) is fixedly connected with a rubber pad (32).

8. The handheld multi-degree-of-freedom minimally invasive surgical instrument according to claim 2, characterized in that: The two ends of the bidirectional screw rod (35) are rotatably connected to the inner walls on both sides of the connecting block (27) respectively.

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